“We are now appealing for sightings of this Nissan in the days leading up to the firearms incident on Saturday afternoon.
“If you saw this vehicle or have information about any of its occupants in recent days, we need to hear from you.”
Overton said police were particularly interested in sightings from the days prior up until July 13.
“This was a terrifying incident for the victim, and we are continuing to provide support to her,” Overton said.
“We are asking anyone who may know anything about this to please come forward. Any piece of information, no matter how small, could assist us in locating those responsible.”
Police would also like any drivers who were in the area to check their dashcam footage.
Anyone with information should call 105 and quote file number 240713/7934.
Information can also be provided anonymously through Crime Stoppers on 0800 555 111.